Class: Aws::RiKanjoo::Ec2

Inherits:
Object
  • Object
show all
Defined in:
lib/aws/rikanjo/ec2.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(region, instance_type, ri_util) ⇒ Ec2

Returns a new instance of Ec2.



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# File 'lib/aws/rikanjo/ec2.rb', line 8

def initialize(region, instance_type, ri_util)
  @region             = region
  @instance_type      = instance_type
  @ri_util            = ri_util
  @os                 = 'linux'
  @current_price_url  = 'http://a0.awsstatic.com/pricing/1/ec2'
  @previous_price_url = 'http://a0.awsstatic.com/pricing/1/ec2/previous-generation'
end

Instance Attribute Details

#instance_type ⇒ Object (readonly)

Returns the value of attribute instance_type.



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# File 'lib/aws/rikanjo/ec2.rb', line 6

def instance_type
  @instance_type
end

#region ⇒ Object (readonly)

Returns the value of attribute region.



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# File 'lib/aws/rikanjo/ec2.rb', line 6

def region
  @region
end

#ri_util ⇒ Object (readonly)

Returns the value of attribute ri_util.



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# File 'lib/aws/rikanjo/ec2.rb', line 6

def ri_util
  @ri_util
end

Instance Method Details

#clean_region(region) ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 112

def clean_region(region)
  return region.gsub(/^us-east-1$/, 'us-east')
end

#convert_region(region) ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 98

def convert_region(region)
  # not same om region
  case region
  when 'us-east-1'      then 'us-east'
  when 'us-west-1'      then 'us-west'
  when 'us-west-2'      then 'us-west-2'
  when 'eu-west-1'      then 'eu-ireland'
  when 'ap-southeast-1' then 'apac-sin'
  when 'ap-northeast-1' then 'apac-tokyo'
  when 'ap-southeast-2' then 'apac-syd'
  when 'sa-east-1'      then 'sa-east-1'
  end
end

#om_price_file ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 77

def om_price_file
  return "#{@os}-od.min.js"
end

#om_price_from_contents(contents) ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 17

def om_price_from_contents(contents)
  region = convert_region(@region)

  # parse
  json = parse_contents(contents)

  # select 'region' and 'instance_type'
  json['config']['regions'].each do |r|
    # r = {"region"=>"us-east", "instanceTypes"=>[{"type"=>"generalCurrentGen", ...
    next unless r['region'] == region
    r['instanceTypes'].each do |type|
      # type = {"type"=>"generalCurrentGen", "sizes"=>[{"size"=>"m3.medium", "vCPU"=>"1" ...
      type['sizes'].each do |i|
        next unless i['size'] == @instance_type

        return { hr_price: i['valueColumns'][0]['prices']['USD'] }
      end
    end
  end

  abort("[ec2][#{region}][#{@instance_type}] Not found om-price?")
end

#parse_contents(data) ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 93

def parse_contents(data)
  data = data.gsub("/*\n * This file is intended for use only on aws.amazon.com. We do not guarantee its availability or accuracy.\n *\n * Copyright 2014 Amazon.com, Inc. or its affiliates. All rights reserved.\n */\ncallback({",'{').gsub("\);", '').gsub(/([a-zA-Z]+):/, '"\1":')
  return Yajl::Parser.parse(data)
end

#previous_generation_type ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 85

def previous_generation_type
  case @instance_type
  when /^(c1|m2|cc2\.8xlarge|cr1\.8xlarge|hi1\.4xlarge|cg1\.4xlarge)/ then true
  when /^m1/ then (@instance_type == 'm1.small') ? false : true
  else false
  end
end

#price_url ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 73

def price_url
  return (self.previous_generation_type) ? @previous_price_url : @current_price_url
end

#ri_price_file ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 81

def ri_price_file
  return (self.previous_generation_type) ? "#{@ri_util}_#{@os}.min.js" : "#{@os}-ri-#{@ri_util}.min.js"
end

#ri_price_from_contents(contents) ⇒ Object 



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# File 'lib/aws/rikanjo/ec2.rb', line 40

def ri_price_from_contents(contents)
  region = clean_region(@region)

  # parse
  json = parse_contents(contents)

  ri_info = nil

  json['config']['regions'].each do |r|
    next unless r['region'] == region

    r['instanceTypes'].each do |type|
      type['sizes'].each do |i|
        next unless i['size'] == @instance_type

        ri_info = ri_info ||= {}
        i['valueColumns'].each do |y|
          case y['name']
          when 'yrTerm1'
            ri_info[@ri_util] = { upfront: y['prices']['USD'] }
          when 'yrTerm1Hourly'
            ri_info[@ri_util].store(:hr_price, y['prices']['USD'])
          end
        end
      end
    end
  end

  abort("[ec2][#{region}][#{@instance_type}] Not found ri-price?") unless ri_info

  return ri_info
end